Present State and Perspectives of Severe Plastic Deformation

Compared with traditional processing methods, the severe plastic deformation (SPD) has some advantages. It can produce ultra-fine grain metals or alloys and has a strong impact on the microstructure and mechanical properties of materials. Three principal SPD methods, i.e. accumulative roll bonding, equal channel angular pressing, and high pressure and torsion, as well as the characteristics, present state and perspectives of SPD are summarized in this paper.